Lake Champlain is one of a large number of large lakes spread in an arc from Labrador through the northernUnited States and into the Northwest Territories of Canada. Although it is much smaller than the Great Lakes of Ontario, Erie, Huron, Superior, or Michigan, Lake Champlain is a large body of fresh water. The lake is about 490 square miles (1,269 km2) in area. It is about 125 miles (201 km) long. At its widest point, it is about 14 miles (23 km) wide. The maximum depth is about 400 feet (120 m). It contains about 80 islands, including an the entire country of Grand Isle County in Vermont.